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3003816
Intact Fibroblast Growth Factor 23 (FGF23), Serum
IFGF23
Ordering Recommendation
May assist in the evaluation of inherited or acquired disorders of mineral metabolism such as hypophosphatemia rickets, tumor-induced osteomalacia, and familial tumoral calcinosis with hyperphosphatemia.
New York DOH Approval Status
This test is New York state approved.
Specimen Required
Patient Preparation
Collect
Serum separator tube (SST). Also acceptable: Plain red.
Specimen Preparation
Transfer 0.5 mL serum to an ARUP standard transport tube. (Min: 0.25 mL)
Test is not performed at ARUP; separate specimens must be submitted when multiple tests are ordered.
Storage/Transport Temperature
Frozen. Also acceptable: Refrigerated.
Unacceptable Conditions
Remarks
Stability
Ambient: Unacceptable; Refrigerated: 2 weeks; Frozen: 3 months
Methodology
Quantitative Chemiluminescent Immunoassay (CLIA)
Performed
Varies
Reported
6-11 days
Reference Interval
By Report
Interpretive Data
Compliance Category
Performed by non-ARUP Laboratory
Note
Hotline History
Hotline History
Date of Change
Test Name Change
Methodology
Performance/Reported Schedule
Specimen Requirements
Reference Interval
Interpretive Data
Note
CPT Code
Component Change
Other Interface Change
New Test
Inactive
N/A
CPT Codes
83520
Components
| Component Test Code* | Component Chart Name | LOINC |
|---|---|---|
| 3003817 | Intact Fibroblast Growth Factor 23 | 54390-0 |
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
- Phosphatonin
- Intact-FGF23
- Familial Tumoral Calcinosis with Hyperphosphatemia
- X-linked Hypophosphatemia
- Autosomal Dominant Hypophosphatemic Rickets
- FGF23
- Oncogenic Osteomalacia
Intact Fibroblast Growth Factor 23 (FGF23), Serum
Mayo Clinic Laboratories
